225144564 has 12 divisors (see below), whose sum is σ = 525337344. Its totient is φ = 75048184.

The previous prime is 225144559. The next prime is 225144581. The reversal of 225144564 is 465441522.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9381012 + ... + 9381035.

It is an arithmetic number, because the mean of its divisors is an integer number (43778112).

Almost surely, 2^225144564 is an apocalyptic number.

It is an amenable number.

225144564 is an abundant number, since it is smaller than the sum of its proper divisors (300192780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225144564 is a wasteful number, since it uses less digits than its factorization.

225144564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18762054 (or 18762052 counting only the distinct ones).

The product of its digits is 38400, while the sum is 33.

The square root of 225144564 is about 15004.8180262208. The cubic root of 225144564 is about 608.3504335136.

The spelling of 225144564 in words is "two hundred twenty-five million, one hundred forty-four thousand, five hundred sixty-four".